United Kingdom and the League of Nations
The United Kingdom and the League of Nations played central roles in the diplomatic history of the interwar period 1920-1939 and the search for peace. British activists and political leaders helped plan and found the League of Nations, provided much of the staff leadership, and Britain (alongside France) played a central role in most of the critical issues facing the League.
Source: Wikipedia — United Kingdom and the League of Nations (CC BY-SA 4.0)